Arc Abrasives 71-10818AF Flap Disc 4.5 in 5/8-11 50 Grit

Product Description

The ARC ABRASIVES 71-10818AF is a Type 27 Predator flap disc designed for aggressive material removal on metal, weld seams, and fabricated surfaces. The disc measures 4.5 inches in diameter with a 5/8-11 threaded arbor for direct mounting on standard angle grinders. At 50 grit, it sits in the coarse range, making it well suited for grinding welds flush, removing heavy mill scale, and deburring thick stock. Each disc weighs 0.35 pounds. The overlapping abrasive flap construction provides consistent cut rate and a degree of surface blending as the flap layers wear down progressively during use.

This disc is used in metal fabrication shops, structural steel work, pipeline work, and general industrial grinding applications. The 5/8-11 arbor is the standard thread for 4.5-inch angle grinders, which are commonly found on fabrication floors and in field welding kits. The 50-grit specification targets initial weld grinding and surface prep rather than finishing passes. Sold in a minimum quantity of 10 discs per box, making it practical for shop stocking or job-site supply.

Key Features

• 4.5-inch diameter with 5/8-11 threaded arbor fits standard angle grinders
• 50-grit coarse abrasive for aggressive weld grinding and scale removal
• Overlapping flap construction delivers consistent cut rate throughout disc life
• Predator series designation indicating high-performance abrasive construction
• Sold in 10-disc increments for efficient shop or site stocking

Compatibility

Designed for use with 4.5-inch angle grinders equipped with a standard 5/8-11 threaded spindle. Suitable for grinding carbon steel, stainless steel, and other ferrous metals.

Installation Notes

Flap discs are installed and removed by licensed or experienced trade users following angle grinder manufacturer instructions. Confirm the grinder RPM rating meets or exceeds the disc maximum RPM before mounting. Always power down and disconnect the grinder from its power source before changing discs. Wear appropriate PPE including face shield, gloves, and hearing protection during operation.

Technical Specifications

• Disc Diameter: 4.5 inches
• Arbor Size: 5/8-11 threaded
• Grit: 50 (Coarse)
• Weight: 0.35 pounds per disc
• Minimum Order Quantity: 10 each per box
• Unit of Measure: Each

Standard Information

• Brand: ARC ABRASIVES
• Manufacturer Part Number: 71-10818AF